#include <stdio.h>

int get_sum(int x,int y)
{
	int z;
	z = x + y;
	return z;
}

int my_fun(int x,int y,int(*p)(int,int))
{
	int ret;
	ret = p(x,y);
	return ret;
}

int main(int argc,char *argv[])
{
	int a,b;
	scanf("%d %d",&a,&b);
	
	int sum	= my_fun(a,b,get_sum);
	printf("sum = %d\n",sum);
	
	return 0;
}